Slice the celery stalks thinly on a diagonal so you get maximum crunch in every bite. The pieces should be slim but still sturdy.
Pit the dates (if not already done) and slice them into thin slivers. They’ll look a bit like ribbons and add pockets of chewy sweetness throughout the salad.
Take a block of Parmigiano-Reggiano and shave or slice it into thin pieces. The big, translucent flakes are what you want for flavor and showiness.
Add the sliced celery, dates, and almonds to a large mixing bowl. Toss them gently so the almonds and dates are scattered evenly through the green celery.
In a separate small bowl, whisk the lemon juice, olive oil, honey, a pinch of salt, and pepper flakes until the mixture looks glossy and blended. Taste and adjust the salt and pepper if needed.
Drizzle the dressing over the celery mixture and toss well to make sure every bite gets coated. The salad will take on a subtle sheen and start to smell fresh and lemony.
Gently toss or scatter the Parmesan shavings over the top. Let them nestle among the celery for both flavor and presentation.
Crack fresh black pepper over everything, taste for balance, then serve right away for the ultimate crunch and freshness.